Consolidated Statements of Stockholders' Equity (USD $) In Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings
Balance at Dec. 31, 2014	$ 174,059	$ 216	$ 0	$ 173,843
Balance (in shares) at Dec. 31, 2014		54,042
Net income	8,399us-gaap_NetIncomeLoss
Stock options exercised and restricted stock awards vested, including tax benefits	2,180	2	2,178
Stock options exercised and restricted stock awards vested, including tax benefits (in shares)		260
Share-based compensation	438		438
Stock repurchased and retired	(2,955)	(1)	(2,616)	(338)
Stock repurchased and retired (in shares)		(131)
Balance at Mar. 31, 2015	$ 182,121	$ 217	$ 0	$ 181,904
Balance (in shares) at Mar. 31, 2015		54,171

This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation".

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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Number of shares that have been repurchased and retired during the period.

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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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