Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
BASIC
Net income	$ 5,841	$ 5,153	$ 8,787	$ 6,785
Weighted-average common shares outstanding	15,098	14,933	15,032	14,904
Basic earnings per share (in dollars per share)	$ 0.39	$ 0.35	$ 0.58	$ 0.46
DILUTED
Net income	$ 5,841	$ 5,153	$ 8,787	$ 6,785
Weighted-average common shares outstanding	15,098	14,933	15,032	14,904
Dilutive effect of stock options and restricted stock	321	115	290	176
Weighted-average common shares outstanding on a diluted basis	15,419	15,048	15,322	15,080
Diluted earnings per share (in dollars per share)	$ 0.38	$ 0.34	$ 0.57	$ 0.45

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References+ Details

- Definition

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

+ References

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+ Details

- Definition

The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

+ References+ Details

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References+ Details

- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

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-URI http://asc.fasb.org/extlink&oid=6528421

+ Details