CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 22,230	$ 26,485
Restricted cash	7	7
Accounts receivable and unbilled, net (includes $2.1 million and $1.0 million with related parties at June 30, 2018 and December 31, 2017, respectively)	115,398	83,079
Prepaid expenses and other current assets	20,844	20,400
Total current assets	158,479	129,971
Property and equipment, net	52,360	48,739
Goodwill	660,981	660,981
Intangible assets, net	83,959	98,740
Deferred income taxes	5,972	6,343
Other assets	6,430	5,943
Total assets	968,181	950,717
Current liabilities:
Accounts payable	16,859	16,674
Accrued expenses	72,925	23,673
Pre-funded study costs (includes $1.0 million with related parties at December 31, 2017)	0	57,406
Advanced billings (includes $0.6 million and $1.7 million with related parties at June 30, 2018 and December 31, 2017, respectively)	120,945	73,756
Current portion of long-term debt	16,500	16,500
Other current liabilities	5,933	4,697
Total current liabilities	233,162	192,706
Long-term debt, net, less current portion	147,021	205,111
Deemed landlord liability, less current portion	25,571	26,602
Deferred income tax liability	602	560
Deferred credit	11,061	11,468
Other long-term liabilities	10,683	10,740
Total liabilities	428,100	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 June 30, 2018 and December 31, 2017, respectively	0	0
Common stock - $0.01 par-value; 250,000,000 shares authorized at June 30, 2018 and December 31, 2017, respectively; 35,545,233 and 35,466,510 shares issued and outstanding at June 30, 2018 and December 31, 2017, respectively	356	355
Treasury stock - 200,000 shares at June 30, 2018 and December 31, 2017	(6,030)	(6,030)
Additional paid-in capital	634,469	630,341
Accumulated deficit	(86,599)	(120,402)
Accumulated other comprehensive loss	(2,115)	(734)
Total shareholders’ equity	540,081	503,530
Total liabilities and shareholders’ equity	$ 968,181	$ 950,717