CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income	$ 2,376	$ 735
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation and amortization	22,518	20,718
Provision for doubtful accounts	1,260	1,285
Amortization of debt discount and debt issuance costs	126	160
Stock-based compensation	1,160	1,301
Deferred income taxes	(1,135)	(1,914)
Loss on equity investments	1,775
(Gain) loss on disposition of long-lived assets	15	302
Unrealized loss on foreign currency	739	(64)
Other non-cash activity		(17)
Changes in operating assets and liabilities, excluding the effects of acquisitions and dispositions:
Accounts receivable	(10,887)	(9,102)
Materials and supplies, prepayments, and other current assets	431	90
Prepaid income taxes	399	5,158
Accounts payable and accrued liabilities, advance payments and deposits and other current liabilities	(4,055)	(3,188)
Accrued taxes	355	1,620
Other assets	298	324
Other liabilities	84	1,362
Net cash provided by operating activities	15,459	18,770
Cash flows from investing activities:
Capital expenditures	(14,061)	(17,641)
Hurricane rebuild capital expenditures		(123)
Purchases of strategic investments	(2,768)	(10,000)
Purchase of short-term investments		(5,000)
Proceeds from sale of short-term investments		141
Net cash used in investing activities	(16,829)	(32,623)
Cash flows from financing activities:
Dividends paid on common stock	(2,721)	(2,720)
Distributions to non-controlling interests	(4,220)	(1,540)
Payment of debt issuance costs	(1,010)
Principal repayments of term loan	(938)	(949)
Stock-based compensation share repurchases	(1,625)	(1,569)
Purchases of common stock- share repurchase plan	(1,600)
Repurchases of non-controlling interests	(1,774)	(225)
Investments made by minority shareholders in consolidated affiliates		488
Net cash used in financing activities	(13,888)	(6,515)
Effect of foreign currency exchange rates on cash and cash equivalents	(115)	15
Net change in cash, cash equivalents, and restricted cash	(15,373)	(20,353)
Total cash, cash equivalents, and restricted cash, beginning of period	162,358	192,907
Total cash, cash equivalents, and restricted cash, end of period	146,985	172,554
Noncash investing activity:
Purchases of property, plant and equipment included in accounts payable and accrued expenses	$ 8,393	$ 8,129