Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Additional Information (Detail)

v3.2.0.727
Fair Value Measurements - Additional Information (Detail) - Level 3 [Member]
6 Months Ended
Jun. 30, 2015
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]  
Fair value interest rate spreads, minimum 2.00%
Fair value interest rate spreads, maximum 5.00%