XML 42 R43.htm IDEA: XBRL DOCUMENT v3.2.0.727
Held to Maturity Securities in Continuous Unrealized Loss Position (Detail) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Schedule of Held-to-maturity Securities [Line Items]    
Less than 12 Months, Fair Value $ 7,396 $ 38,736
Less than 12 Months, Unrealized Losses (12) (88)
12 Months or Longer, Fair Value 0 0
12 Months or Longer, Unrealized Losses 0 0
Fair Value 7,396 38,736
Unrealized Losses (12) (88)
U.S. Agency securities    
Schedule of Held-to-maturity Securities [Line Items]    
Less than 12 Months, Fair Value 3,754 28,188
Less than 12 Months, Unrealized Losses (3) (54)
12 Months or Longer, Fair Value 0 0
12 Months or Longer, Unrealized Losses 0 0
Fair Value 3,754 28,188
Unrealized Losses (3) (54)
Corporate securities    
Schedule of Held-to-maturity Securities [Line Items]    
Less than 12 Months, Fair Value 3,642 10,548
Less than 12 Months, Unrealized Losses (9) (34)
12 Months or Longer, Fair Value 0 0
12 Months or Longer, Unrealized Losses 0 0
Fair Value 3,642 10,548
Unrealized Losses $ (9) $ (34)