Deferred Income Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Loss and credit carryforwards	$ 84,153	$ 72,466
Accrued expenses		4,128
Stock-based compensation	8,302	8,832
Lease accounting	5,817
Fixed assets - state	2,514	2,295
Total deferred tax assets	100,786	87,721
Valuation allowance	(15,655)	(23,840)
Net deferred tax assets	85,131	63,881
Deferred tax liabilities:
Fixed assets	(8,802)	(8,607)
Intangible assets	(99,870)	(101,451)
Prepaid expenses	(882)	(206)
Accrued expenses	(2,740)
Total deferred tax liabilities	(112,294)	(110,264)
Net deferred tax liability	$ (27,163)	$ (46,383)