Income Taxes Reconciliation of Changes in Tax Positions (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning unrecognized tax benefit	$ 98	$ 1,109	$ 2,012
Additions for tax positions of prior years	526	0	98
Lapse of Statute of Limitations	0	(1,011)	(1,001)
Ending unrecognized tax benefit	$ 624	$ 98	$ 1,109