Stock-Based Compensation-Restricted Shares (Details) - Restricted stock - Class A Common Stock - USD ($)
$ / shares in Units, $ in Thousands |
12 Months Ended |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
| Shares |
|
|
|
| Nonvested at the beginning of the period, Shares |
88,334
|
69,000
|
67,167
|
| Granted, Shares |
53,000
|
154,145
|
86,017
|
| Vested, Shares |
(38,332)
|
(129,811)
|
(84,184)
|
| Forfeited or unearned, Shares |
(2,000)
|
(5,000)
|
|
| Nonvested at the end of the period, Shares |
101,002
|
88,334
|
69,000
|
| Weighted-Average Grant-Date Fair Value |
|
|
|
| Nonvested at the beginning of the period, Weighted-Average Grant-Date Fair Value (usd per share) |
$ 7.83
|
$ 5.07
|
$ 4.29
|
| Granted, Weighted-Average Grant-Date Fair Value (usd per share) |
6.72
|
7.85
|
5.88
|
| Vested, Weighted-Average Grant-Date Fair Value (usd per share) |
4.44
|
6.44
|
5.27
|
| Forfeited or unearned, Weighted-Average Grant-Date Fair Value (usd per share) |
3.91
|
6.59
|
|
| Nonvested at the end of the period, Weighted-Average Grant-Date Fair Value (usd per share) |
$ 5.01
|
$ 7.83
|
$ 5.07
|
| Stock option expense |
$ 886
|
$ 848
|
$ 664
|
| Unearned compensation cost |
$ 404
|
|
|