CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 22,245	$ 26,485
Restricted cash	7	7
Accounts receivable and unbilled, net (includes $1.3 million and $1.0 million with related parties at March 31, 2018 and December 31, 2017, respectively)	110,654	83,079
Prepaid expenses and other current assets	20,848	20,400
Total current assets	153,754	129,971
Property and equipment, net	51,079	48,739
Goodwill	660,981	660,981
Intangible assets, net	91,349	98,740
Deferred income taxes	9,970	6,343
Other assets	5,891	5,943
Total assets	973,024	950,717
Current liabilities:
Accounts payable	17,924	16,674
Accrued expenses	63,576	23,673
Pre-funded study costs (includes $1.0 million with related parties at December 31, 2017)	0	57,406
Advanced billings (includes $0.3 million and $1.7 million with related parties at March 31, 2018 and December 31, 2017, respectively)	126,387	73,756
Current portion of long-term debt	16,500	16,500
Other current liabilities	8,105	4,697
Total current liabilities	232,492	192,706
Long-term debt, net, less current portion	181,067	205,111
Deemed landlord liability, less current portion	26,091	26,602
Deferred income tax liability	596	560
Deferred credit	11,265	11,468
Other long-term liabilities	10,440	10,740
Total liabilities	461,951	447,187
Commitments and contingencies (see Note 11)
Shareholders’ equity:
Preferred stock - $0.01 par-value; 5,000,000 shares authorized; no shares issued and outstanding at March 31, 2018 and December 31, 2017, respectively	0	0
Common stock - $0.01 par-value; 250,000,000 shares authorized at March 31, 2018 and December 31, 2017, respectively; 35,504,675 and 35,466,510 shares issued and outstanding at March 31, 2018 and December 31, 2017, respectively	355	355
Treasury stock - 200,000 shares at March 31, 2018 and December 31, 2017	(6,030)	(6,030)
Additional paid-in capital	632,374	630,341
Accumulated deficit	(115,521)	(120,402)
Accumulated other comprehensive loss	(105)	(734)
Total shareholders’ equity	511,073	503,530
Total liabilities and shareholders’ equity	$ 973,024	$ 950,717