IMPACT OF THE INVASION OF UKRAINE - Assets and Liabilities (Details) - Russia - Discontinued Operations, Held-for-sale or Disposed of by Sale $ in Thousands	Mar. 31, 2022 USD ($)
Unusual or Infrequent Item, or Both [Line Items]
Cash and cash equivalents	$ 59,456
Allowance	8,600
Trade receivables and contract assets, net of allowance of $8.4 million	19,802
Prepaid and other current assets	3,400
Deferred tax assets	647
Other noncurrent assets	30
Total assets in Russia	83,335
Accounts payable	1,056
Accrued compensation and benefits expenses	48,964
Accrued expenses and other current liabilities	4,761
Income taxes payable, current	195
Operating lease liabilities	3,199
Other noncurrent liabilities	994
Total liabilities in Russia	$ 59,169