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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 6 Months Ended
Jul. 31, 2018
Jul. 31, 2017
Cash flows from operating activities:    
Net income including noncontrolling interests $ 20,842 $ 9,783
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation 12,033 9,955
Income from equity method investments (1,571) (837)
Dividends received from equity method investee 1,003 2,005
Accrued interest income (815)  
Deferred income tax (7,938) 537
Stock based compensation expense 443 350
Loss (gain) on disposal of property and equipment 104 (13)
Loss on sale of investment   13
Changes in assets and liabilities:    
Accounts receivable (1,735) 886
Inventories (4,416) (5,034)
Other assets (2,443) (953)
Accounts payable, trade 4,002 1,678
Other liabilities (1,262) (4,828)
Net cash provided by operating activities 18,247 13,542
Cash flows from investing activities:    
Capital expenditures (5,813) (14,366)
Purchase of short-term investments (111,154)  
Other 18 219
Net cash used in investing activities (116,949) (14,147)
Cash flows from financing activities:    
Treasury stock acquired (16,648)  
Dividend payments to and purchases of stock from noncontrolling interests holders (1,699) (1,725)
Capital contributions from minority investor 246  
Net cash used in financing activities (18,101) (1,725)
Net decrease in cash, cash equivalents and restricted cash (116,803) (2,330)
Cash, cash equivalents and restricted cash, beginning of period 191,342 188,706
Cash, cash equivalents and restricted cash, end of period 74,539 186,376
Non cash investing activities – Accrued capital expenditures 469 744
Non cash financing activities – Stock awards accrued 335 281
Non cash financing activities – Stock awards issued 1,473 1,195
Reconciliation of total cash, cash equivalents and restricted cash:    
Cash and cash equivalents 73,761 185,997
Restricted cash $ 778 $ 379