Basis of Presentation (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Weighted average basic shares outstanding	5,921	5,870
Add: Potential common shares related to stock options	47	43
Potential common shares related to unvested restricted stock	6	6
Potential common shares related to warrants	74	61
Weighted average diluted shares outstanding	6,048	5,980
Net income	$ 4,457us-gaap_NetIncomeLoss	$ 4,533us-gaap_NetIncomeLoss	$ 19,771us-gaap_NetIncomeLoss
Basic EPS (usd per share)	$ 0.75us-gaap_EarningsPerShareBasic	$ 0.77us-gaap_EarningsPerShareBasic
Diluted EPS (usd per share)	$ 0.74us-gaap_EarningsPerShareDiluted	$ 0.76us-gaap_EarningsPerShareDiluted
Weighted average anti-dilutive shares not included in the calculation of diluted EPS	24	44

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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