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Share Based Compensation - Share Based Compensation Expense Included in Operating Expense (Income) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based and long-term incentive compensation	$ 4,425	$ 4,474	$ 3,417
General and Administrative Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based and long-term incentive compensation	3,323	2,451	1,001
Other Operating Expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based and long-term incentive compensation	$ 1,102	$ 2,023	$ 2,416

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- Definition

Share Based and Long Term Incentive Compensation

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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