Long-Term Debt - 2014 Revolver Loan (Details) - USD ($)
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12 Months Ended |
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Jan. 27, 2014 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Oct. 07, 2015 |
Oct. 06, 2015 |
Nov. 03, 2014 |
| Debt Instrument [Line Items] |
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| Payments of debt issuance costs |
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$ 14,296,000
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$ 0
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$ 7,496,000
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| Line of Credit |
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| Debt Instrument [Line Items] |
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| Debt maximum borrowing capacity |
$ 90,000,000.0
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$ 1,440,000,000.000
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| Payments of debt issuance costs |
$ 2,900,000
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| Line of Credit | 2014 Revolver Loan |
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| Debt Instrument [Line Items] |
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| Debt maximum borrowing capacity |
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$ 150,000,000.0
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$ 80,000,000.0
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$ 80,000,000.0
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| Payments of debt issuance costs |
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$ 2,300,000
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| Accumulated amortization of deferred financing costs |
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$ 985,000
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$ 530,000
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| Quarterly commitment fee percentage |
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0.50%
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| Debt remaining borrowing capacity |
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$ 61,900,000
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| Line of Credit | 2014 Revolver Loan | Alternate Base Rate Loan |
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| Debt Instrument [Line Items] |
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| Debt instrument, margin in addition to base rate |
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3.25%
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| Line of Credit | 2014 Revolver Loan | Alternate Base Rate Loan | Federal Funds Effective Rate |
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| Debt Instrument [Line Items] |
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| Debt instrument, basis spread on variable rate |
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0.50%
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| Line of Credit | 2014 Revolver Loan | Alternate Base Rate Loan | LIBOR |
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| Debt Instrument [Line Items] |
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| Debt instrument, basis spread on variable rate |
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1.00%
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| Line of Credit | 2014 Revolver Loan | Eurodollar Loan |
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| Debt Instrument [Line Items] |
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| Debt instrument, margin in addition to base rate |
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4.25%
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| Line of Credit | Letter of Credit |
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| Debt Instrument [Line Items] |
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| Debt remaining borrowing capacity |
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$ 3,100,000
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