Equity, Voting Rights and Stock Award and Incentive Plan (Details)
$ / shares in Units, $ in Thousands |
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12 Months Ended |
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Nov. 12, 2021
USD ($)
shares
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Jun. 15, 2021
$ / shares
shares
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Dec. 28, 2020
$ / shares
shares
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Mar. 05, 2020
$ / shares
shares
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Jan. 02, 2020
USD ($)
$ / shares
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Dec. 31, 2021
USD ($)
VoteperShare
$ / shares
shares
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Dec. 31, 2020
USD ($)
$ / shares
shares
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| Stock Award and Incentive Plan [Abstract] |
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| Compensation payable |
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$ 21,049
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$ 21,543
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| Stock based compensation expense |
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7,534
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4,186
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| Tax benefit from compensation expense |
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1,900
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$ 1,000
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| Compensation cost related to non-vested options not yet recognized |
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$ 3,600
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| Class A [Member] |
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| Voting Rights [Abstract] |
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| Number of votes per share | VoteperShare |
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1
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| Class A [Member] | Maximum [Member] |
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| Stock Award and Incentive Plan [Abstract] |
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| Number of shares reserved for issuance under each plan (in shares) | shares |
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7,500,000
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| Class B [Member] |
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| Voting Rights [Abstract] |
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| Number of votes per share | VoteperShare |
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10
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| Stock Options [Member] |
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| Stock Award and Incentive Plan [Abstract] |
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| Stock option outstanding (in shares) | shares |
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10,000
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10,000
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| Stock option outstanding, exercise price (in dollars per share) | $ / shares |
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$ 25.55
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$ 25.55
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| Stock Options [Member] | Maximum [Member] |
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| Stock Award and Incentive Plan [Abstract] |
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| Term of nonqualified stock options |
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10 years
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| Restricted Stock Awards [Member] |
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| Stock Award and Incentive Plan [Abstract] |
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| RSAs granted (in shares) | shares |
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69,500
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392,700
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| Grant date fair value (in dollars per share) | $ / shares |
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$ 18.18
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$ 14.31
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| RSA shares outstanding (in shares) | shares |
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411,200
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1,079,650
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| Average weighted grant price (in dollars per share) | $ / shares |
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$ 14.93
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$ 19.45
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| Number of shares with accelerated vesting (in shares) | shares |
483,515
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| Accelerated cost |
$ 3,800
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| Phantom RSAs [Member] |
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| Stock Award and Incentive Plan [Abstract] |
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| RSAs granted (in shares) | shares |
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396,800
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| Grant date fair value (in dollars per share) | $ / shares |
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$ 25.02
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| RSA shares outstanding (in shares) | shares |
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380,300
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| Average weighted grant price (in dollars per share) | $ / shares |
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$ 25.02
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| Compensation payable |
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$ 1,200
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| Stock based compensation expense |
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1,200
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| Tax benefit from compensation expense |
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300
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| Compensation cost related to non-vested options not yet recognized |
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$ 7,400
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| Mr. Gabelli [Member] | Award Granted for 2016 [Member] | Restricted Stock Awards [Member] |
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| Stock Award and Incentive Plan [Abstract] |
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| Reduction of RSU expense |
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$ 1,400
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| Mr. Gabelli [Member] | Award Granted for 2016 [Member] | Restricted Stock Awards [Member] | Class A [Member] |
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| Stock Award and Incentive Plan [Abstract] |
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| Deferred compensation agreement, share price (in dollars per share) | $ / shares |
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$ 18.8812
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$ 32.8187
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| Payments for compensation agreement |
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$ 43,700
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| Reduction of RSU expense due to cap and waiver of receipt of deferred compensation expense |
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$ 32,300
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