Schedule I - Parent Company Only Financial Statements - Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 163,564	$ 122,475
Total current assets	1,073,530	1,757,054
Other assets	407,898	369,867
Total assets	3,201,599	3,454,157
Current liabilities:
Total current liabilities	1,045,387	1,664,639
Long-term debt	589,294	537,926
Total liabilities	2,239,457	2,371,188
Total stockholders’ equity	599,664	567,569
Total liabilities, redeemable partnership interest, and equity	3,201,599	3,454,157
NEWMARK Group Inc Parent
Current assets:
Cash and cash equivalents	101	24
Total current assets	101	24
Investment in subsidiaries	543,412	501,000
Note receivable from related party	589,294	593,517
Other assets	179,813	152,027
Total assets	1,312,620	1,246,568
Current liabilities:
Accounts payable and accrued expenses	74,564	84,436
Payable to related parties	49,098	56,637
Total current liabilities	123,662	141,073
Long-term debt	589,294	537,926
Total liabilities	712,956	678,999
Total stockholders’ equity	599,664	567,569
Total liabilities, redeemable partnership interest, and equity	$ 1,312,620	$ 1,246,568