Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Current assets:
Cash and cash equivalents	$ 31,055				$ 33,207				$ 13,561	$ 13,328
Restricted cash	21,314				45,476
Trade accounts receivable, less allowances of $13,543 and $9,341 at December 31, 2012 and 2011, respectively	107,312				99,888
Inventories	83,373				81,528
Deferred income taxes	33,450				36,313
Escrow receivable					41,537
Prepaid expenses and other current assets	34,079				21,999
Assets held for sale					171,185
Total current assets	310,583				531,133
Property, plant and equipment, net	53,835				46,137
Patents and other intangible assets, net	7,290				8,846
Goodwill	74,388				73,094				73,598
Deferred income taxes	18,881				16,741
Other long-term assets	7,920				9,429
Total assets	472,897	539,566	530,395	694,106	685,380	639,868	632,860	618,938
Current liabilities:
Bank borrowings	16				1,318
Current portion of long-term debt					17,500
Trade accounts payable	22,575				18,231
Accrued charges related to U.S. Government resolutions					83,138
Other current liabilities	39,594				40,836
Liabilities held for sale					22,676
Total current liabilities	62,185				183,699
Long-term debt	20,000				191,195
Deferred income taxes	11,456				9,778
Other long-term liabilities	11,424				8,634
Total liabilities	105,065	193,599	205,196	381,734	393,306	347,777	352,884	354,949
Contingencies (Note 17)
Shareholders' equity
Common shares $0.10 par value; 50,000,000 shares authorized; 19,339,329 and 18,465,444 issued and outstanding as of December 31, 2012 and 2011, respectively	1,934				1,846
Additional paid-in capital	246,306				214,505
Retained earnings	114,847				72,009
Accumulated other comprehensive income	4,745				3,714
Total shareholders' equity	367,832	345,967	325,199	312,372	292,074	292,091	279,976	263,989
Total liabilities and shareholder's equity	$ 472,897	$ 539,566	$ 530,395	$ 694,106	$ 685,380	$ 639,868	$ 632,860	$ 618,938