Earnings Per Share - Computation of Earnings Per Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share [Abstract]
Net Earnings	$ 727	$ 484	$ 7,380	$ 1,379
Weighted average common shares outstanding	13,584,000	7,467,000	13,506,000	7,385,000
Basic earnings per share	$ 0.05	$ 0.07	$ 0.55	$ 0.19
Net Earnings	$ 727	$ 484	$ 7,380	$ 1,379
Weighted average common shares outstanding	13,584,000	7,467,000	13,506,000	7,385,000
Stock issued related to exercise of warrants	1,251,000	0	1,059,000	0
Dilutive effect of stock options	193,000	16,000	153,000	3,000
Total common shares and dilutive potential common shares	15,028,000	7,473,000	14,718,000	7,388,000
Diluted earnings per share	$ 0.05	$ 0.07	$ 0.50	$ 0.19