Annual report pursuant to Section 13 and 15(d)

Valuation and qualifying accounts (Details)

v2.4.0.8
Valuation and qualifying accounts (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Allowance for doubtful accounts
     
Valuation and qualifying accounts      
Balance at the beginning of the year $ 600 $ 1,247 $ 1,200
Additions charged to earnings 329 259 1,106
Changes to net 122 (906) (1,059)
Balance at the end of the year 1,051 600 1,247
Reserves for inventory
     
Valuation and qualifying accounts      
Balance at the beginning of the year 1,199 1,288 1,404
Additions charged to earnings 757 715 1,080
Changes to net (357) (804) (1,196)
Balance at the end of the year 1,599 1,199 1,288
Valuation of deferred tax assets
     
Valuation and qualifying accounts      
Balance at the beginning of the year 1,374 830 877
Changes to net 21 544 (47)
Balance at the end of the year $ 1,395 $ 1,374 $ 830