Accrued Expenses (Tables) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2017

Dec. 31, 2016

Payables and Accruals [Abstract]

Other Current Liabilities [Table Text Block]

$ 10,951

$ 11,726

Accrued expenses and other liabilities

228,748

201,989

Interest Payable, Current

6,749

6,441

Reserve for policy cancellations

11,048

9,567

Accrued Rent and Vendor Expenses

30,616

28,669

Accrued Employee Benefits, Current

40,540

45,771

Accrued Bonuses

$ 106,923

82,438

Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]

Accrued Expenses and Other Liabilities

Accrued expenses and other liabilities at December 31 consisted of the following:

(in thousands)	2017		2016
Accrued incentive compensation	$	106,923	$	82,438
Accrued compensation and benefits	40,540		45,771
Accrued rent and vendor expenses	30,616		28,669
Deferred revenue	21,921		17,377
Reserve for policy cancellations	11,048		9,567
Accrued interest	6,749		6,441
Other	10,951		11,726
Total	$	228,748	$	201,989

Schedule of Accrued Liabilities [Table Text Block]

Accrued expenses and other liabilities at December 31 consisted of the following:

(in thousands)	2017		2016
Accrued incentive compensation	$	106,923	$	82,438
Accrued compensation and benefits	40,540		45,771
Accrued rent and vendor expenses	30,616		28,669
Deferred revenue	21,921		17,377
Reserve for policy cancellations	11,048		9,567
Accrued interest	6,749		6,441
Other	10,951		11,726
Total	$	228,748	$	201,989

Deferred Revenue

$ 21,921

$ 17,377