Fair Value Measurements and Derivative Financial Instruments - Summary of Gross Presentation, Effects of Offsetting and Net Presentation of Derivative Instruments (Detail) - Interest Rate Swaps [Member] $ in Thousands	Jun. 30, 2017 USD ($)
Derivative [Line Items]
Other assets, Gross Amount Recognized	$ 137
Other long-term liabilities, Gross Amount Recognized	11
Other assets, Gross Amount Offset on the Balance Sheet	(11)
Other long-term liabilities, Gross Amount Offset on the Balance Sheet	(11)
Other assets, Net Amount Presented on the Balance Sheet	126
Other long-term liabilities, Net Amount Presented on the Balance Sheet	$ 0