Statement of Accounting Policies (Details) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 Foreign Currency	Mar. 31, 2014 Foreign Currency	Jun. 30, 2013 Foreign Currency	Mar. 31, 2013 Foreign Currency	Jun. 30, 2014 Defined Benefit Pension Plans	Mar. 31, 2014 Defined Benefit Pension Plans	Jun. 30, 2013 Defined Benefit Pension Plans	Mar. 31, 2013 Defined Benefit Pension Plans	Jun. 30, 2014 Accumulative Other Comprehensive Income	Mar. 31, 2014 Accumulative Other Comprehensive Income	Jun. 30, 2013 Accumulative Other Comprehensive Income	Mar. 31, 2013 Accumulative Other Comprehensive Income	Jun. 30, 2014 Carrying (Reported) Amount, Fair Value Disclosure Less unamortized deferred financing fees	Dec. 31, 2013 Carrying (Reported) Amount, Fair Value Disclosure Less unamortized deferred financing fees	Jun. 30, 2014 Estimate of Fair Value, Fair Value Disclosure Less unamortized deferred financing fees	Dec. 31, 2013 Estimate of Fair Value, Fair Value Disclosure Less unamortized deferred financing fees
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Current Fiscal Year End Date			--12-31
Notes Payable, Fair Value Disclosure																	$ 100,000,000	$ 11,000,000	$ 103,100,000	$ 10,800,000
Accumlated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			2,427,000		3,547,000	3,493,000	11,933,000	12,784,000	(1,066,000)	(1,066,000)	(2,216,000)	(2,141,000)	2,481,000	2,427,000	9,717,000	10,643,000
Other comprehensive income before reclassifications					2,804,000	54,000	(4,994,000)	(851,000)	0	0	0	0	2,804,000	54,000	(4,994,000)	(851,000)
Amounts reclassified from accumulated other comprehensive income								0				(75,000)				(75,000)
Total other comprehensive income (loss), net of tax	2,804,000	(4,994,000)	2,858,000	(5,920,000)				(851,000)				(75,000)				(926,000)
Ending balance	$ 5,285,000		$ 5,285,000		$ 6,351,000	$ 3,547,000	$ 6,939,000	$ 11,933,000	$ (1,066,000)	$ (1,066,000)	$ (2,216,000)	$ (2,216,000)	$ 5,285,000	$ 2,481,000	$ 4,723,000	$ 9,717,000