Estimated Fair Values of Assets Acquired and Liabilities Assumed for Celfrost Acquisition (Details) (USD $) In Thousands, unless otherwise specified	Sep. 08, 2014 as initially reported	Sep. 08, 2014 Scenario, Adjustment [Member]	Oct. 15, 2013 Celfrost [Member]	Oct. 15, 2013 Celfrost [Member] as initially reported	Oct. 15, 2013 Celfrost [Member] Scenario, Adjustment [Member]
Business Acquisition [Line Items]
Current assets	$ 3,767	$ 0	$ 5,495	$ 5,638	$ (143)
Property, plant and equipment		0	182	182	0
Goodwill	11,255	55	6,086	5,943	143
Other intangibles			4,333	4,333	0
Business Acquisition, Purchase Price Allocation, Current Assets, Prepaid Expense and Other Assets		0	4	4	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	(2,296)	(55)	(3,979)	3,979	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	4,710		(875)	875	0
Business Acquisition Cost Of Acquired Entity Consideration Paid			11,246	11,246	0
Business Acquisition, Deferred Payments			1,067	1,067	0
Net assets acquired and liabilities assumed	$ 17,571	$ 55	$ 12,313	$ 12,313	$ 0