Stock-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended |
Mar. 31, 2017 | Mar. 31, 2016 |
Stock-based compensation arrangement by stock-based payment award | | |
Stock-based compensation | $ 484 | $ 639 |
Stock Options | | |
Stock-based compensation arrangement by stock-based payment award | | |
Expiration period | 10 years | |
Options outstanding | | |
Outstanding at beginning of period | 3,705,893 | |
Granted in period | 0 | |
Exercised in period | 0 | |
Forfeited in period | (21,247) | |
Expired in period | (688,723) | |
Outstanding at end of period | 2,995,923 | |
Vested and expected to vest at end of period | 2,995,923 | |
Excisable at end of period | 2,069,688 | |
Weighted average exercise price | | |
Outstanding at beginning of period | $ 7.72 | |
Granted in period | 0 | |
Exercised in period | 0 | |
Forfeited in period | 6.77 | |
Expired in period | 11.57 | |
Outstanding at end of period | 6.85 | |
Vested and expected to vest at end of period | 6.85 | |
Exercisable at end of period | $ 8.50 | |
Weighted average remaining contractual term | | |
Outstanding | 5 years 5 months 23 days | |
Vested and expected to vest | 5 years 5 months 23 days | |
Exercisable | 3 years 5 months 1 day | |
Unrecognized compensation costs | $ 1,000 | |
Unrecognized compensation costs, recognition period | 2 years 2 months 5 days | |
Stock Options | First anniversary, vesting percentage | | |
Weighted average grant date fair value | | |
Vesting percentage | 25.00% | |
Stock Options | Second anniversary, vesting percentage | | |
Weighted average grant date fair value | | |
Vesting percentage | 25.00% | |
Stock Options | Third anniversary, vesting percentage | | |
Weighted average grant date fair value | | |
Vesting percentage | 25.00% | |
Stock Options | Fourth anniversary, vesting percentage | | |
Weighted average grant date fair value | | |
Vesting percentage | 25.00% | |
Unvested Shares | | |
Weighted average remaining contractual term | | |
Unrecognized compensation costs, recognition period | 1 year 7 months 24 days | |
Outstanding | | |
Outstanding at beginning of period | 945,252 | |
Granted in period | 0 | |
Vested in period | (62,571) | |
Forfeited in period | (8,076) | |
Outstanding at end of period | 874,605 | |
Weighted average grant date fair value | | |
Outstanding at beginning of period | $ 3.76 | |
Granted in period | 0 | |
Vested in period | 5.59 | |
Forfeited in period | 6.04 | |
Outstanding at end of period | $ 3.61 | |
Unrecognized compensation costs | $ 2,000 | |
Unvested Shares | First anniversary, vesting percentage | | |
Weighted average grant date fair value | | |
Vesting percentage | 33.33% | |
Unvested Shares | Second anniversary, vesting percentage | | |
Weighted average grant date fair value | | |
Vesting percentage | 33.33% | |
Unvested Shares | Third anniversary, vesting percentage | | |
Weighted average grant date fair value | | |
Vesting percentage | 33.33% | |
Performance Stock Units | | |
Weighted average remaining contractual term | | |
Unrecognized compensation costs, recognition period | 1 year 10 months 28 days | |
Outstanding | | |
Outstanding at beginning of period | 844,315 | |
Granted in period | 0 | |
Settled in period | 0 | |
Forfeited in period | (43,166) | |
Outstanding at end of period | 801,149 | |
Weighted average grant date fair value | | |
Outstanding at beginning of period | $ 2.56 | |
Granted in period | 0 | |
Vested in period | 0 | |
Forfeited in period | 6.96 | |
Outstanding at end of period | $ 2.32 | |
Unrecognized compensation costs | $ 900 | |
Performance Stock Units | Minimum | | |
Weighted average grant date fair value | | |
Vesting percentage | 0.00% | |
Performance Stock Units | Maximum | | |
Weighted average grant date fair value | | |
Vesting percentage | 100.00% | |
Performance Stock Units | First anniversary, vesting percentage | | |
Weighted average grant date fair value | | |
Vesting percentage | 33.33% | |
Performance Stock Units | Second anniversary, vesting percentage | | |
Weighted average grant date fair value | | |
Vesting percentage | 33.33% | |
Performance Stock Units | Third anniversary, vesting percentage | | |
Weighted average grant date fair value | | |
Vesting percentage | 33.33% | |
Phantom Stock Units | | |
Weighted average remaining contractual term | | |
Unrecognized compensation costs, recognition period | 3 years 15 days | |
Outstanding | | |
Outstanding at beginning of period | 531,820 | |
Granted in period | 0 | |
Vested in period | 0 | |
Forfeited in period | (31,596) | |
Outstanding at end of period | 500,224 | |
Weighted average grant date fair value | | |
Outstanding at beginning of period | $ 2.69 | |
Granted in period | 0 | |
Vested in period | 0 | |
Forfeited in period | 2.69 | |
Outstanding at end of period | $ 2.69 | |
Unrecognized compensation costs | $ 500 | |
Phantom Stock Units | First anniversary, vesting percentage | | |
Weighted average grant date fair value | | |
Vesting percentage | 25.00% | |
Phantom Stock Units | Second anniversary, vesting percentage | | |
Weighted average grant date fair value | | |
Vesting percentage | 25.00% | |
Phantom Stock Units | Third anniversary, vesting percentage | | |
Weighted average grant date fair value | | |
Vesting percentage | 25.00% | |
Phantom Stock Units | Fourth anniversary, vesting percentage | | |
Weighted average grant date fair value | | |
Vesting percentage | 25.00% | |
Cash Performance Stock Units | | |
Outstanding | | |
Outstanding at beginning of period | 444,005 | |
Granted in period | 0 | |
Settled in period | 0 | |
Forfeited in period | 0 | |
Outstanding at end of period | 444,005 | |
Weighted average grant date fair value | | |
Outstanding at beginning of period | $ 2.69 | |
Granted in period | 0 | |
Vested in period | 0 | |
Forfeited in period | 0 | |
Outstanding at end of period | $ 2.69 | |
Unrecognized compensation costs | $ 0 | |
Cash Performance Stock Units | Minimum | | |
Weighted average grant date fair value | | |
Vesting percentage | 0.00% | |
Cash Performance Stock Units | Maximum | | |
Weighted average grant date fair value | | |
Vesting percentage | 100.00% | |