Accounting Policies and Basis of Presentation (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	0 Months Ended			3 Months Ended		6 Months Ended
	Apr. 09, 2014	Apr. 10, 2013	Feb. 28, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Accounting Policies [Abstract]
Shipping and handling revenue				$ 3,672	$ 2,656	$ 7,162	$ 5,636
Effective income tax rate, continuing operations (percent)				1.70%	8.20%
Provision for income taxes				86	25	167	25
Discontinued operation, tax effect of discontinued operation							47
Debt instrument, fair value disclosure				23,432		23,432		23,300
Long-term debt, gross				23,406		23,406		23,168
Common stock, dividends, per share, declared (in Dollars per share)			$ 0.05
Payments of dividends	$ 907	$ 916				$ 907	$ 916