Description of Business and Accounting Policies - Reconciliation of Number of Shares Used in Calculation of Basic and Diluted Income (Loss) Per Share (Detail) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]
Weighted average shares outstanding for basic income (loss) per share	11,246	11,194	11,149	11,107	11,058	10,943	10,922	10,875	11,174	10,945
Dilutive effect of common stock equivalent shares										504
Weighted average shares outstanding for diluted income (loss) per share	11,246	11,194	11,149	11,107	11,310	11,474	10,922	10,875	11,174	11,449