Acquisitions - Additional Information (Detail) - USD ($) $ in Thousands			3 Months Ended		12 Months Ended
	Dec. 31, 2014	Jun. 16, 2014	May. 31, 2015	May. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Oct. 03, 2014
Business Acquisition [Line Items]
Net sales			$ 150,576	$ 141,186
Earnings before income taxes			14,558	$ 12,749
Kay Toledo [Member]
Business Acquisition [Line Items]
Total purchase consideration	$ 16,238				$ 16,238
Net sales			6,200		$ 25,000
Earn out provision period	3 years
Additional amount paid to sellers	$ 1,000
Earnings before income taxes			900
Sovereign [Member]
Business Acquisition [Line Items]
Total purchase consideration		$ 10,633
Net sales			6,200			$ 27,100
Earn out provision period		4 years
Additional amount paid to sellers		$ 1,000
Earnings before income taxes			$ 1,000
Hoosier Data Forms [Member]
Business Acquisition [Line Items]
Total purchase consideration							$ 200