Securities and Loan Securities Carried at Fair Value - Securities and Loan Securities Carried at Fair Value (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Fair Value, Option, Quantitative Disclosures [Line Items]
Cost	$ 161	$ 161
Fair Value	226	226
Loan Securities [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Cost	161	161
Fair Value	$ 226	$ 226