Annual report pursuant to Section 13 and 15(d)

Income Taxes (Unrecognized Tax Benefit Rollforward) (Details)

v2.4.0.6
Income Taxes (Unrecognized Tax Benefit Rollforward) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Balance at beginning of year $ 6,611 $ 6,492 $ 5,899
Additions based on tax positions related to current year 718 470 593
Additions to tax provision of prior years 316 4 0
Reductions to tax provision of prior years (29) (262) 0
Lapse of the applicable statute of limitations (187) (93) 0
Balance at end of year $ 7,429 $ 6,611 $ 6,492