Summary of Operating Loss Carryforwards (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Operating Loss Carryforwards [Line Items]
U.S. Federal operating loss carryforwards	$ 19,354
State Net Operating Loss Carryforwards	9,233
Foreign Net Operating Loss Carryforwards	10,380
2014
Operating Loss Carryforwards [Line Items]
State Net Operating Loss Carryforwards	335
2015
Operating Loss Carryforwards [Line Items]
State Net Operating Loss Carryforwards	2
2016
Operating Loss Carryforwards [Line Items]
State Net Operating Loss Carryforwards	843
2017
Operating Loss Carryforwards [Line Items]
State Net Operating Loss Carryforwards	831
Operating Loss Carryforwards Expiring Two Thousand Eighteen [Member]
Operating Loss Carryforwards [Line Items]
State Net Operating Loss Carryforwards	706
Operating Loss Carryforwards Expiring Two Thousand Nineteen To Two Thousand Twenty Four
Operating Loss Carryforwards [Line Items]
U.S. Federal operating loss carryforwards	16,600
State Net Operating Loss Carryforwards	2,791
Operating Loss Carryforwards Expiring Two Thousand Twenty Five To Two Thousand Twenty Seven
Operating Loss Carryforwards [Line Items]
U.S. Federal operating loss carryforwards	300
State Net Operating Loss Carryforwards	52
Operating Loss Carryforwards Expiring Beyond Two Thousand Twenty Seven
Operating Loss Carryforwards [Line Items]
U.S. Federal operating loss carryforwards	2,454
State Net Operating Loss Carryforwards	3,673
Non-Expiring
Operating Loss Carryforwards [Line Items]
Foreign Net Operating Loss Carryforwards	$ 10,380