Subsequent Events	3 Months Ended
	Jun. 30, 2022
Subsequent Events [Abstract]
Subsequent Events	12.  SUBSEQUENT EVENTOn July 28, 2022, the Company announced that its board of directors authorized the Company to pursue a spin-off of its wholly owned Clinical Development business, which includes parts of its DD segment focused on providing Phase I-IV clinical trial management, market access and technology solutions to pharmaceutical and biotechnology organizations. The planned spin-off will result in two independent, publicly traded companies. The spin-off is intended to be a tax-free transaction to the Company and its stockholders for U.S. federal income tax purposes and is expected to be effected through a dividend of the Clinical Development business’ shares to the Company's shareholders. The Company anticipates that, consistent with any applicable legal and tax requirements, there will be ongoing transitional and commercial arrangements to provide for a seamless delivery of services to the customers and other stakeholders of the independent companies following the spin-off. The Company is targeting completion of the spin-off in the second half of 2023. The spin-off will be subject to the satisfaction of certain customary conditions, including, among others, the receipt of final approval by the Company's board of directors, the receipt of appropriate assurances regarding the tax-free nature of the separation, and the effectiveness of any required filings with the SEC.