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Earnings Per Share - Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share Basic And Diluted [Abstract]
Net income	$ 2,873	$ 3,408	$ 4,851	$ 4,968
Weighted average shares outstanding (basic)	8,110	8,091	8,109	8,088
Impact of common stock equivalents	0	0	0	0
Weighted average shares outstanding (diluted)	8,110	8,091	8,109	8,088
Per share information:
Basic earnings per share	$ 0.35	$ 0.42	$ 0.60	$ 0.61
Diluted earnings per share	$ 0.35	$ 0.42	$ 0.60	$ 0.61

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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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