Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income from continuing operations:
Income before income taxes	$ 24,818	$ 24,803	$ 49,277	$ 52,867
Income tax expense	5,369	17,399	10,286	23,425
Net income from continuing operations	19,449	7,404	$ 38,991	$ 29,442
Effective tax rate, continuing operations			20.90%	44.30%
Income from discontinued operations:
Income before income taxes			$ 0	$ 2,388
Income tax expense				692
Net income from discontinued operations	0	(2)	$ 0	$ 1,696
Effective tax rate, discontinued operations			0.00%	29.00%
Less: Income attributable to noncontrolling interests:
Net income attributable to noncontrolling interests	69	968	$ 169	$ 2,018
Income tax expense			$ 0	$ 0
Effective tax rate, noncontrolling interests			0.00%	0.00%
Income attributable to the Company
Income before income taxes			$ 49,108	$ 53,237
Income tax expense			10,286	24,117
Net income attributable to the Company	$ 19,380	$ 6,434	$ 38,822	$ 29,120
Effective tax rate attributable to the Company			20.90%	45.30%