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Basis of Presentation (Details) - USD ($)				3 Months Ended	9 Months Ended
Basis of Presentation (Details) - USD ($)	Oct. 16, 2020	Jul. 09, 2020	Jun. 12, 2020	Mar. 31, 2021	Sep. 30, 2020	Dec. 31, 2020	Jun. 29, 2020	Mar. 31, 2020	Dec. 31, 2019
Basis of Presentation (Details) [Line Items]
Stockholders' Equity, Reverse Stock Split		1 for 10
Common Stock, Par or Stated Value Per Share (in Dollars per share)		$ 0.001		$ 0.001		$ 0.001
Common Stock, Shares, Outstanding (in Shares)		4,239,578		6,218,728		5,694,772	42,395,782
Common Stock, Shares, Issued (in Shares)				6,218,728		5,694,772	42,395,782
Letters of Credit Outstanding, Amount				$ 10,800,000
CARES Act, Description				The CARES Act also provided an employee retention credit (“ERC”) which was a refundable tax credit against certain employment taxes of up to $5,000 per employee for eligible employers. The credit is equal to 50% of qualified wages paid to employees during a quarter, capped at $10,000 of qualified wages through year end. The Company became eligible for the credit beginning on March 16, 2020. The CAA extended and expanded the availability of the ERC through June 30, 2021. Subsequently, the American Rescue Plan Act of 2021 ("ARP"), enacted on March 11, 2021, extended and expanded the availability of the ERC through December 31, 2021, however, certain provisions apply only after December 31, 2020. This new legislation amended the employee retention credit to be equal to 70% of qualified wages paid to employees after December 31, 2020, and before January 1, 2022. During calendar year 2021, a maximum of $10,000 in qualified wages for each employee per qualifying calendar quarter may be counted in determining the 70% credit. Therefore, the maximum tax credit that can be claimed by an eligible employer is $7,000 per employee per qualifying calendar quarter of 2021. The Company will qualify for the employee retention credit for quarters where the Company’s operations were partially suspended due to orders from an appropriate governmental authority limiting commerce, travel, or group meetings due to COVID-19.
Prepaid Expense and Other Assets				$ 1,900,000
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents				84,059,000		$ 92,693,000		$ 44,028,000	$ 66,286,000
Paycheck Protection Program Loan [Member] \| Unsecured Debt [Member]
Basis of Presentation (Details) [Line Items]
Debt Instrument, Face Amount			$ 6,200,000
Debt Instrument, Interest Rate, Stated Percentage			1.00%
Debt Instrument, Periodic Payment			$ 261,275
Notes Payable to Bank, Current				1,700,000
Notes Payable to Bank, Noncurrent				4,500,000
New Term Loan Agreement [Member] \| Secured Debt [Member]
Basis of Presentation (Details) [Line Items]
Value of debt outstanding				125,300,000
Debt Instrument, Covenant Compliance, EBITDA Requirment	$ 25,000,000.0				$ 34,000,000.0
Debt Instrument, Covenant Compliance, Minimum Liquidity					$ 10,000,000.0
Debt, Pre-payment	15,000,000.0
New Term Loan Agreement [Member] \| Secured Debt [Member] \| Payment No Later than Third Quarter 2021 [Member]
Basis of Presentation (Details) [Line Items]
Debt, Pre-payment	$ 5,000,000.0
Outside the United States [Member]
Basis of Presentation (Details) [Line Items]
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents				$ 30,500,000		$ 48,700,000