Annual report pursuant to Section 13 and 15(d)

Income Tax - Reconciliation of Income Tax Attributable to Operations (Detail)

v2.4.0.8
Income Tax - Reconciliation of Income Tax Attributable to Operations (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Tax Disclosure [Abstract]      
Income taxes at statutory rates (at a rate of 34% for all periods presented) $ (10,829) $ (7,152) $ (4,989)
Expenses not deducted for tax purposes (738) (1,212) (2,366)
Effect of tax rate changes on deferred tax assets and liabilities (744)    
Rate differential on foreign earnings 2,003 1,672 1,326
Reduction (increase) in benefit of operating losses (10) 15 16
Reduction in the benefit of other tax attributes   551 468
Investment tax credits (347) (485) (588)
Change in valuation allowance 10,538 6,324 6,175
Book to tax return adjustments 127 287 (42)
Other         
Income tax expense