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Related Party Transactions	6 Months Ended
Related Party Transactions	Jun. 30, 2021
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Other Purchases and Sales During the six months ended June 30, 2021 and 2020, the Company paid Applied Cryo Technologies, Inc. (“ACT”), a company owned 51% by Crenshaw Family Holdings, LP (“Crenshaw Family Holdings”), $498 thousand and $73 thousand, respectively, for equipment, repairs and services. Casey Crenshaw, the Company's controlling shareholder, is the beneficial owner of 25% of Crenshaw Family Holdings and is deemed to jointly control Crenshaw Family Holdings with family members. During the three months ended June 30, 2021 and 2020, the Company paid ACT $132 thousand and $40 thousand, respectively, for equipment repairs and services. The Company had no sales to ACT during the three and six months ended June 30, 2021 and 2020. The Company had $0 and $2 thousand due from ACT included in accounts receivable on the unaudited condensed consolidated balance sheets at June 30, 2021 and December 31, 2020, respectively. As of June 30, 2021 and December 31, 2020, the Company had $72 thousand and $121 thousand, respectively, due to ACT included in accounts payable on the unaudited condensed consolidated balance sheets. The Company purchases supplies and services from a subsidiary of The Modern Group. Casey Crenshaw is the beneficial owner of 25% of the Modern Group and is deemed to jointly control The Modern Group with family members. During the six months ended June 30, 2021 and 2020, the Company made purchases of supplies and services from a subsidiary of The Modern Group totaling $721 thousand and $195 thousand, respectively. During the three months ended June 30, 2021 and 2020, the Company made purchases of supplies and services totaling $191 thousand and $162 thousand, respectively. There was no receivable due from a subsidiary of The Modern Group as of June 30, 2021 and December 31, 2020. As of June 30, 2021 and December 31, 2020, the Company had $760 thousand and $582 thousand, respectively, due to a subsidiary of The Modern Group included in accounts payable on the unaudited condensed consolidated balance sheets. Chart Energy & Chemicals, Inc. (“Chart E&C”) beneficially owns 8.4% of our outstanding common stock and is party to a Secured Term Note Payable with the Company. The Company purchases services from Chart E&C. During the six months ended June 30, 2021 and 2020, purchases from Chart E&C totaled $78 thousand and $20 thousand, respectively. During the three months ended June 30, 2021 and 2020, purchases from Chart E&C totaled $35 thousand and $10 thousand. As of June 30, 2021 and December 31, 2020, the Company had $32 thousand and $14 thousand, respectively, due to Chart E&C included in accounts payable on the unaudited condensed consolidated balance sheets.