Long-Term Borrowings	9 Months Ended
Mar. 31, 2018
Long-Term Borrowings [Abstract]
Long-Term Borrowings	10. Long-term borrowings South Africa The Company's South African long-term facility agreement is described in Note 14 to the Company's audited consolidated financial statements included in its Annual Report on Form 10-K for the year ended June 30, 2017. As of March 31, 2018, $75.5 million was outstanding under the Company's South African long-term facility agreement, and the carrying amount of the long-term borrowings approximated fair value. On March 8, 2018, the Company amended its South African long-term facility to include an additional term loan of up to ZAR 210.0 million (approximately $17.8 million translated at exchange rates applicable as of March 31, 2018). This loan matures on March 31, 2020. Interest on the ZAR 210 million term loan is payable on the last day of March, June, September and December of each year and on the final maturity date based on the Johannesburg Interbank Agreed Rate ("JIBAR") in effect from time to time plus a margin of 2.75%. The JIBAR has been set at 6.867% for the period to June 29, 2018, in respect of the loans provided under the South African long-term facilities agreement. On July 26, 2017, the Company utilized ZAR 1.25 billion (approximately $92.2 million) of its South African long-term facility to partially fund the acquisition of 15% of Cell C. On March 9, 2018, the Company utilized ZAR 84.0 million (approximately $7.1 million) of its new ZAR 210 million South African long-term facility to partially fund the acquisition of a further 4.0% in DNI and the balance of the facility to extend a ZAR 126.0 million (approximately $10.6 million) loan to DNI (refer to Note 6). Principal repayments of the facilities are due in twelve quarterly installments commencing on September 29, 2017 and the Company has made scheduled repayments of ZAR 562.5 million ($44.4 million) during the nine months ended March 31, 2018. The next scheduled principal payment will be made on June 29, 2018. The amount to be paid will be either (i) ZAR 324.0 million ($27.4 million) if the Company is unable to proceed with its acquisition of a further 6% in DNI or (ii) ZAR 213.8 million ($18.1 million) if the Company concludes its investment, all amounts translated at exchange rates applicable as of March 31, 2018. The Company paid a non-refundable origination fee of approximately ZAR 6.3 million ($0.6 million) in August 2017 and a non-refundable origination fee of ZAR 2.4 million ($0.2 million) in March 2018. Interest expense incurred during the three and nine months ended March 31, 2018, was $1.9 million and $5.5 million, respectively. During the three and nine months ended March 31, 2018, $0.1 million and $0.3 million, respectively, of prepaid facility fees were amortized. South Korea The South Korean senior secured loan facility is described in Note 14 to the Company's audited consolidated financial statements included in its Annual Report on Form 10-K for the year ended June 30, 2017. On July 29, 2017, the Company utilized approximately KRW 0.3 billion ($0.3 million) of its Facility C revolving credit facility under the Company's South Korean long-term facility agreement to pay interest due on the Company's South Korean senior secured loan facility. On October 20, 2017, the Company made an unscheduled repayment of $16.6 million and settled the full outstanding balance, including interest, related to these borrowings. Interest expense incurred during the three months ended March 31, 2017, was $0.3 million. Interest expense incurred during the nine months ended March 31, 2018 and 2017, was $0.4 million and $0.9 million, respectively. Prepaid facility fees amortized during the three months ended March 31, 2017, was $0.03 million. Prepaid facility fees amortized during the nine months ended March 31, 2018 and 2017, was $0.1 million and $0.09 million, respectively.

10. Long-term borrowings

South Africa

The Company's South African long-term facility agreement is described in Note 14 to the Company's audited consolidated financial statements included in its Annual Report on Form 10-K for the year ended June 30, 2017. As of March 31, 2018, $75.5 million was outstanding under the Company's South African long-term facility agreement, and the carrying amount of the long-term borrowings approximated fair value. On March 8, 2018, the Company amended its South African long-term facility to include an additional term loan of up to ZAR 210.0 million (approximately $17.8 million translated at exchange rates applicable as of March 31, 2018). This loan matures on March 31, 2020. Interest on the ZAR 210 million term loan is payable on the last day of March, June, September and December of each year and on the final maturity date based on the Johannesburg Interbank Agreed Rate ("JIBAR") in effect from time to time plus a margin of 2.75%. The JIBAR has been set at 6.867% for the period to June 29, 2018, in respect of the loans provided under the South African long-term facilities agreement.

On July 26, 2017, the Company utilized ZAR 1.25 billion (approximately $92.2 million) of its South African long-term facility to partially fund the acquisition of 15% of Cell C. On March 9, 2018, the Company utilized ZAR 84.0 million (approximately $7.1 million) of its new ZAR 210 million South African long-term facility to partially fund the acquisition of a further 4.0% in DNI and the balance of the facility to extend a ZAR 126.0 million (approximately $10.6 million) loan to DNI (refer to Note 6).

Principal repayments of the facilities are due in twelve quarterly installments commencing on September 29, 2017 and the Company has made scheduled repayments of ZAR 562.5 million ($44.4 million) during the nine months ended March 31, 2018. The next scheduled principal payment will be made on June 29, 2018. The amount to be paid will be either (i) ZAR 324.0 million ($27.4 million) if the Company is unable to proceed with its acquisition of a further 6% in DNI or (ii) ZAR 213.8 million ($18.1 million) if the Company concludes its investment, all amounts translated at exchange rates applicable as of March 31, 2018.

The Company paid a non-refundable origination fee of approximately ZAR 6.3 million ($0.6 million) in August 2017 and a non-refundable origination fee of ZAR 2.4 million ($0.2 million) in March 2018. Interest expense incurred during the three and nine months ended March 31, 2018, was $1.9 million and $5.5 million, respectively. During the three and nine months ended March 31, 2018, $0.1 million and $0.3 million, respectively, of prepaid facility fees were amortized.

South Korea

The South Korean senior secured loan facility is described in Note 14 to the Company's audited consolidated financial statements included in its Annual Report on Form 10-K for the year ended June 30, 2017. On July 29, 2017, the Company utilized approximately KRW 0.3 billion ($0.3 million) of its Facility C revolving credit facility under the Company's South Korean long-term facility agreement to pay interest due on the Company's South Korean senior secured loan facility. On October 20, 2017, the Company made an unscheduled repayment of $16.6 million and settled the full outstanding balance, including interest, related to these borrowings.

Interest expense incurred during the three months ended March 31, 2017, was $0.3 million. Interest expense incurred during the nine months ended March 31, 2018 and 2017, was $0.4 million and $0.9 million, respectively. Prepaid facility fees amortized during the three months ended March 31, 2017, was $0.03 million. Prepaid facility fees amortized during the nine months ended March 31, 2018 and 2017, was $0.1 million and $0.09 million, respectively.