Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 94,713	$ 85,169
Short-term investments	258	197
Accounts receivable, net	106,914	118,647
Inventories	98,227	110,168
Current deferred tax assets, net	7,062	7,225
Other current assets	20,904	24,592
Total current assets	328,078	345,998
Deferred tax assets, net	7,843	8,514
Goodwill	92,353	92,353
Intangible assets, net	38,230	44,742
Property, plant and equipment, net	39,874	44,327
Other assets, net	20,738	20,336
Total assets	527,116	556,270
Current liabilities:
Accounts payable	64,574	76,440
Payroll and related expenses	21,251	22,410
Accrued expenses	37,366	38,149
Deferred revenue	60,717	51,898
Financing lease obligation	2,097	2,460
Total current liabilities	186,005	191,357
Long-term debt	65,000	65,000
Long-term financing lease obligation	0	831
Pension and other postretirement benefits liabilities	128,145	125,546
Long-term deferred revenue	35,543	33,186
Other long-term liabilities	13,329	13,730
Commitments and contingencies
Shareholders’ equity:
Common stock (250,000 shares authorized, 63,928 and 63,453 shares issued and 60,802 and 60,354 outstanding)	643	639
Additional paid-in capital	708,714	705,755
Accumulated deficit	(515,931)	(492,830)
Accumulated other comprehensive loss	(94,332)	(86,944)
Total shareholders’ equity	99,094	126,620
Total liabilities and shareholders’ equity	$ 527,116	$ 556,270