Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 441,064	$ 422,623
Accounts receivable, net	637,613	615,265
Prepaid expenses and other current assets	246,277	189,149
Total current assets	1,324,954	1,227,037
Property, plant and equipment, net	208,658	193,218
Deferred tax assets	67,568	70,143
Investment in equity affiliates	809	4,800
Intangible assets, net	127,068	78,946
Goodwill	1,260,511	1,069,408
Other assets	249,866	242,328
Total assets	3,239,434	2,885,880
Current liabilities
Short-term borrowings	205,000	160,000
Current portion of long-term debt	39,213	39,181
Accounts payable	18,317	9,768
Income taxes payable	51,226	24,159
Accrued expenses and other current liabilities	452,364	498,247
Total current liabilities	766,120	731,355
Long-term debt, less current portion	1,026,047	698,152
Deferred tax liabilities	6,621	2,415
Other liabilities	177,546	162,790
Total liabilities	1,976,334	1,594,712
Redeemable non-controlling interest	4,680	4,520
Shareholders' equity
Preferred shares, $0.01 par value, 250,000,000 authorized, none issued
Common shares, $0.01 par value, 500,000,000 authorized, 198,794,052 and 192,868,427 issued and outstanding as of December 31, 2016 and June 30, 2017, respectively	1,924	1,984
Additional paid-in capital	1,356,936	1,384,468
Retained earnings	276,184	358,121
Accumulated other comprehensive income (loss)	(376,624)	(457,925)
Total equity	1,258,420	1,286,648
Commitments and contingencies
Total liabilities, redeemable non-controlling interest and equity	$ 3,239,434	$ 2,885,880