Nature of Business and Summary of Significant Accounting Policies (Details)	Dec. 31, 2012
CECO Group, Inc. [Member]
Consolidated financial statements include the accounts of the subsidiaries
Percentage owned	100.00%
CECO Filters, Inc. and Subsidiaries ("CFI") [Member]
Consolidated financial statements include the accounts of the subsidiaries
Percentage owned	99.00%
The Kirk & Blum Manufacturing Company [Member]
Consolidated financial statements include the accounts of the subsidiaries
Percentage owned	100.00%
CECO Abatement Systems, Inc. [Member]
Consolidated financial statements include the accounts of the subsidiaries
Percentage owned	100.00%
CECOaire, Inc. [Member]
Consolidated financial statements include the accounts of the subsidiaries
Percentage owned	100.00%
EFFOX, Inc. ("Effox") [Member]
Consolidated financial statements include the accounts of the subsidiaries
Percentage owned	100.00%
Fisher-Klosterman, Inc. ("FKI") [Member]
Consolidated financial statements include the accounts of the subsidiaries
Percentage owned	100.00%
Flextor, Inc. ("Flextor") [Member]
Consolidated financial statements include the accounts of the subsidiaries
Percentage owned	100.00%
Adwest Technologies, Inc. ("Adwest") [Member]
Consolidated financial statements include the accounts of the subsidiaries
Percentage owned	100.00%