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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 9 Months Ended
Oct. 31, 2018
Oct. 31, 2017
Net income including noncontrolling interests $ 34,611 $ 24,777
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation 18,673 15,695
Income from equity method investments (2,182) (1,931)
Dividends received from equity method investee 3,007 4,009
Interest income from investments (993)  
Deferred income tax (22,146) (5,682)
Stock based compensation expense 730 881
Loss (gain) on disposal of property and equipment 104 87
Loss on sale of investment   13
Changes in assets and liabilities:    
Accounts receivable (2,819) 2,023
Inventories (881) (7,039)
Other assets (2,996) (222)
Accounts payable, trade 1,682 2,195
Other liabilities 2,079 (746)
Net cash provided by operating activities 28,869 34,060
Cash flows from investing activities:    
Capital expenditures (7,954) (19,315)
Acquisition of business, net of cash acquired   (12,049)
Sale of short-term investments 112,091  
Purchase of short-term investments (125,989)  
Other 25 275
Net cash used in investing activities (21,827) (31,089)
Cash flows from financing activities:    
Treasury stock acquired (18,419)  
Dividend payments to and purchases of stock from noncontrolling interests holders (1,734) (1,725)
Capital contributions from minority investor 432 738
Net cash used in financing activities (19,721) (987)
Net (decrease) increase in cash, cash equivalents and restricted cash (12,679) 1,984
Cash, cash equivalents and restricted cash, beginning of period 191,342 188,706
Cash, cash equivalents and restricted cash, end of period 178,663 190,690
Non cash investing activities – Accrued capital expenditures 603 1,049
Non cash financing activities – Stock awards accrued 585 768
Non cash financing activities – Stock awards issued 1,473 1,195
Cash and cash equivalents 178,229 190,460
Restricted cash $ 434 $ 230