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Equity Compensation Plans - Restricted Stock and RSUs (Details) - Restricted stock and restricted stock units - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Equity Compensation Plans
Vesting period			3 years
Changes in unvested awards
Nonvested at the beginning of the period (in shares)			325,000
Granted (in shares)	0	0	101,500	184,500
Vested (in shares)			(57,500)
Forfeited (in shares)			(16,000)
Nonvested at the end of the period (in shares)	353,000		353,000
Weighted Average Grant Date Fair Value
Nonvested at the beginning of the period (in dollars per share)			$ 4.15
Granted (in dollars per share)			5.38
Vested (in dollars per share)			4.04
Forfeited (in dollars per share)			4.43
Nonvested at the end of the period (in dollars per share)	$ 4.51		$ 4.51
Additional information
Total unrecognized compensation cost of restricted awards	$ 869	$ 1,000	$ 869	$ 1,000
Expected weighted-average period for recognition of unrecognized compensation			2 years 1 month 13 days	2 years 5 months 23 days

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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