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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Net cash provided by operating activities $ 21,984,871 $ 6,542,237
Cash flows from investing activities    
Purchase of certificate of deposit (5,000,000) 0
Additions to property, plant and equipment and construction in progress (2,146,991) (1,990,865)
Proceeds from sale of equipment 11,400 5,760
Distribution of earnings from OC-BVI 727,200 1,249,875
Collections on loans receivable 868,991 898,531
Payment for investment in land (17,432,858) (2,975,566)
Restriction on cash balance (515,849) 0
Net cash used in investing activities (23,488,107) (2,812,265)
Cash flows from financing activities    
Dividends paid (2,372,397) (2,194,972)
Repurchase of redeemable preferred stock, net (11,256) (4,159)
Proceeds received from exercise of stock options 0 302,807
Principal repayments of long term debt (5,301,327) (849,285)
Proceeds received from demand loan payable 10,000,000 0
Net cash provided by (used in) financing activities 2,315,020 (2,745,609)
Effect of exchange rate changes on cash (1,005) (21,417)
Net increase in cash and cash equivalents 810,779 962,946
Cash and cash equivalents at beginning of period 33,626,516 33,892,655
Cash and cash equivalents at end of period 34,437,295 34,855,601
Interest paid in cash 110,603 202,734
Non-cash investing and financing activities    
Dividends declared but not paid 1,105,527 1,101,181
Obligation incurred (paid) for investment in land (10,050,000) 10,050,000
Transfers from inventory to property, plant and equipment and construction in progress 83,084 181,875
Common Stock [Member]
    
Non-cash investing and financing activities    
Issuance of stock for services rendered 173,458 82,369
Redeemable Preferred Stock [Member]
    
Non-cash investing and financing activities    
Issuance of stock for services rendered $ 65,289 $ 110,249