Income Taxes Changes in Unrecognized Tax Benefit (Including Interest and Penalties) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Reconciliation of Unrecognized Tax Benefits [Line Items]
Beginning Balance	$ 444
Additions for tax positions for prior years	170
Reduction for tax positions for prior years	(50)
Lapse of the applicable statute of limitations	(221)
Ending Balance	343
Unrecognized Tax Benefits Before Interest And Penalties [Member]
Reconciliation of Unrecognized Tax Benefits [Line Items]
Beginning Balance	284
Additions for tax positions for prior years	123
Reduction for tax positions for prior years	(10)
Lapse of the applicable statute of limitations	(145)
Ending Balance	252
Interest & Penalties
Reconciliation of Unrecognized Tax Benefits [Line Items]
Beginning Balance	160
Additions for tax positions for prior years	47
Reduction for tax positions for prior years	(40)
Lapse of the applicable statute of limitations	(76)
Ending Balance	$ 91