CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 30,127	$ 23,275
Restricted cash	0	7
Accounts receivable and unbilled, net (includes $1.7 million and $3.8 million with related parties at March 31, 2019 and December 31, 2018, respectively)	129,624	133,449
Prepaid expenses and other current assets	22,624	21,383
Total current assets	182,375	178,114
Property and equipment, net	37,639	52,255
Operating lease right-of-use assets	53,627	0
Goodwill	662,380	660,981
Intangible assets, net	63,335	69,179
Deferred income taxes	330	713
Other assets	6,831	6,691
Total assets	1,006,517	967,933
Current liabilities:
Accounts payable (includes $0.1 million and $0.3 million with related parties at March 31, 2019 and December 31, 2018, respectively)	13,626	16,737
Accrued expenses	82,247	87,493
Advanced billings (includes $0.5 million and $0.4 million with related parties at March 31, 2019 and December 31, 2018, respectively)	150,243	147,935
Other current liabilities	18,425	4,861
Total current liabilities	264,541	257,026
Long-term debt, net, less current portion	55,781	79,721
Operating lease liabilities	46,238	0
Deemed landlord liability, less current portion	0	24,484
Deferred income tax liability	3,435	439
Other long-term liabilities	14,625	16,560
Total liabilities	384,620	378,230
Commitments and contingencies (see Note 12)
Shareholders’ equity:
Preferred stock - $0.01 par-value; 5,000,000 shares authorized; no shares issued and outstanding at March 31, 2019 and December 31, 2018, respectively	0	0
Common stock - $0.01 par-value; 250,000,000 shares authorized at March 31, 2019 and December 31, 2018, respectively; 35,728,989 and 35,665,910 shares issued and outstanding at March 31, 2019 and December 31, 2018, respectively	357	356
Treasury stock - 200,000 shares at March 31, 2019 and December 31, 2018, respectively	(6,030)	(6,030)
Additional paid-in capital	643,497	639,381
Accumulated deficit	(13,136)	(41,487)
Accumulated other comprehensive loss	(2,791)	(2,517)
Total shareholders’ equity	621,897	589,703
Total liabilities and shareholders’ equity	$ 1,006,517	$ 967,933

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).