Annual report pursuant to Section 13 and 15(d)

Variations from Federal Statutory Rate (Detail)

v2.4.0.6
Variations from Federal Statutory Rate (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Reconciliation Of Income Taxes [Line Items]      
Expected federal income tax expense (benefit) at statutory rate of 34% $ (807) $ (12,215) $ 2,528
Effect of permanent goodwill impairment and worthless stock differences   7,668 (114)
Effect of permanent subsidiary's acquisition-related costs   461  
Effect of permanent enhanced charitable donation differences (31) (25) (260)
Effect of permanent other differences 106 131 49
Effect of change in financial statement carrying value of investment (5,077) (5,534)  
State income tax expense (benefit), net of federal benefit (40) (871) 238
Federal tax credits   (164) (16)
Other 209 (55) (42)
Effect of differences between U.S. taxation and foreign taxation (35) (53) (17)
Income tax expense (benefit) $ (5,675) $ (10,657) $ 2,366