Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Additional Information (Detail)

v3.6.0.2
Fair Value Measurements - Additional Information (Detail) - Level 3 [Member]
12 Months Ended
Dec. 31, 2016
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]  
Fair value interest rate spreads, minimum 1.00%
Fair value interest rate spreads, maximum 5.00%