Annual report pursuant to Section 13 and 15(d)

Reconciliation of Income Tax (Benefit) Expense Computed at Federal Statutory Tax Rate to Actual Income Tax (Benefit) Expense (Detail)

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Reconciliation of Income Tax (Benefit) Expense Computed at Federal Statutory Tax Rate to Actual Income Tax (Benefit) Expense (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Tax Disclosure [Abstract]      
Expense derived by applying the Federal income tax rate to income (loss) before taxes $ 7,169 $ 3,291 $ (504)
State income tax, net of federal benefit 607 445 146
Foreign income tax (170) (55) 215
Change in valuation allowance (9,087) 0 (660)
Benefits of assets not previously recognized 0 0 (97)
Nondeductible expenses 644 612 674
Fair value adjustment on stock acquisition 487 (251) 0
Stock-based compensation 139 171 137
Tax credits 0 0 53
Changes in tax rates 0 0 (138)
Other 1 6 (36)
Total income tax provision (benefit) $ (210) $ 4,219 $ (210)