Summary Of Operating Loss Carryforwards (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	$ 22,354
State Net Operating Loss Carryforwards	11,145
Foreign Net Operating Loss Carryforwards	8,669
2013
Operating Loss Carryforwards [Line Items]
State Net Operating Loss Carryforwards	2,708
2014
Operating Loss Carryforwards [Line Items]
State Net Operating Loss Carryforwards	2
2015
Operating Loss Carryforwards [Line Items]
State Net Operating Loss Carryforwards	2
2016
Operating Loss Carryforwards [Line Items]
State Net Operating Loss Carryforwards	58
2017
Operating Loss Carryforwards [Line Items]
State Net Operating Loss Carryforwards	847
2018-2023
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	22,354
State Net Operating Loss Carryforwards	3,592
2024-2026
Operating Loss Carryforwards [Line Items]
State Net Operating Loss Carryforwards	269
Foreign Net Operating Loss Carryforwards	9
Beyond 2026
Operating Loss Carryforwards [Line Items]
State Net Operating Loss Carryforwards	3,667
Foreign Net Operating Loss Carryforwards	622
Non-Expiring
Operating Loss Carryforwards [Line Items]
Foreign Net Operating Loss Carryforwards	$ 8,038