Annual report pursuant to Section 13 and 15(d)

Accrued Liabilities Accrued Liabilities (Reconciliation of Product Warranties) (Details)

v2.4.0.8
Accrued Liabilities Accrued Liabilities (Reconciliation of Product Warranties) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Accrued Liabilities, Current [Abstract]      
Balance at beginning of period $ 10,209 $ 10,452 $ 10,256
Provision for warranty claims 5,644 4,905 4,758
Warranty claims (5,054) (5,272) (4,468)
Other (31) 124 (94)
Balance at end of period $ 10,768 $ 10,209 $ 10,452