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Condensed consolidating financial statements (Condensed consolidating statements of cash flows) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Condensed Cash Flow Statements, Captions [Line Items] |  |
Cash flows from (used in) operating activities | $ 26,856 | $ 48,487
Cash flows from investing activities |  |
Acquisition of businesses, net of cash acquired | 0 | (60,836)
Capital expenditures for property and equipment | (4,261) | (11,421)
Long-term loans and advances to affiliates | 0 | 0
Other | 309 | 662
Net cash used in investing activities | (3,952) | (71,595)
Cash flows from financing activities |  |
Borrowings of long-term and short-term debt | 8 | 39,685
Long-term loans and advances to affiliates | 0 | 0
Deferred Financing costs | (513) | 0
Proceeds from stock issuance | 165 | (5,001)
Net cash provided by (used in) financing activities | (539) | 34,684
Effect of exchange rate changes on cash | 363 | (4,264)
Net increase in cash and cash equivalents | 22,728 | 7,312
Cash and cash equivalents |  |
Beginning of period | 109,249 | 76,579
End of period | 131,977 | 83,891
Reportable Legal Entities | FET Inc. (Parent) |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |
Cash flows from (used in) operating activities | 1,670 | 1,628
Cash flows from investing activities |  |
Acquisition of businesses, net of cash acquired | 0 | 0
Capital expenditures for property and equipment | 0 | 0
Long-term loans and advances to affiliates | (1,324) | (41,979)
Other | 0 | 0
Net cash used in investing activities | (1,324) | (41,979)
Cash flows from financing activities |  |
Borrowings of long-term and short-term debt | 0 | 39,898
Long-term loans and advances to affiliates | 0 | 0
Deferred Financing costs | (513) |
Proceeds from stock issuance | 167 | (5,001)
Net cash provided by (used in) financing activities | (346) | 34,897
Effect of exchange rate changes on cash | 0 | 0
Net increase in cash and cash equivalents | 0 | (5,454)
Cash and cash equivalents |  |
Beginning of period | 0 | 5,551
End of period | 0 | 97
Reportable Legal Entities | Guarantor Subsidiaries |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |
Cash flows from (used in) operating activities | 6,093 | 33,735
Cash flows from investing activities |  |
Acquisition of businesses, net of cash acquired | 0 | (60,836)
Capital expenditures for property and equipment | (3,991) | (7,626)
Long-term loans and advances to affiliates | 348 | 12,997
Other | 280 | 175
Net cash used in investing activities | (3,363) | (55,290)
Cash flows from financing activities |  |
Borrowings of long-term and short-term debt | (199) | (207)
Long-term loans and advances to affiliates | 1,324 | 41,979
Deferred Financing costs | 0 |
Proceeds from stock issuance | (1) | 0
Net cash provided by (used in) financing activities | 1,132 | 41,772
Effect of exchange rate changes on cash | 0 | 0
Net increase in cash and cash equivalents | 3,862 | 20,217
Cash and cash equivalents |  |
Beginning of period | 36,884 | 4,006
End of period | 40,746 | 24,223
Reportable Legal Entities | Non-Guarantor Subsidiaries |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |
Cash flows from (used in) operating activities | 19,093 | 13,124
Cash flows from investing activities |  |
Acquisition of businesses, net of cash acquired | 0 | 0
Capital expenditures for property and equipment | (270) | (3,795)
Long-term loans and advances to affiliates | 0 | 0
Other | 29 | 487
Net cash used in investing activities | (241) | (3,308)
Cash flows from financing activities |  |
Borrowings of long-term and short-term debt |  | (6)
Long-term loans and advances to affiliates | (348) | (12,997)
Deferred Financing costs | 0 |
Proceeds from stock issuance | (1) | 0
Net cash provided by (used in) financing activities | (349) | (13,003)
Effect of exchange rate changes on cash | 363 | (4,264)
Net increase in cash and cash equivalents | 18,866 | (7,451)
Cash and cash equivalents |  |
Beginning of period | 72,365 | 67,022
End of period | 91,231 | 59,571
Eliminations |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |
Cash flows from (used in) operating activities | 0 | 0
Cash flows from investing activities |  |
Acquisition of businesses, net of cash acquired | 0 | 0
Capital expenditures for property and equipment | 0 | 0
Long-term loans and advances to affiliates | 976 | 28,982
Other | 0 | 0
Net cash used in investing activities | 976 | 28,982
Cash flows from financing activities |  |
Borrowings of long-term and short-term debt | 0 | 0
Long-term loans and advances to affiliates | (976) | (28,982)
Deferred Financing costs | 0 |
Proceeds from stock issuance | 0 | 0
Net cash provided by (used in) financing activities | (976) | (28,982)
Effect of exchange rate changes on cash | 0 | 0
Net increase in cash and cash equivalents | 0 | 0
Cash and cash equivalents |  |
Beginning of period | 0 | 0
End of period | $ 0 | $ 0

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